Dry granulation method uses pressure instead of water or heat. It suits low-moisture materials, saves energy, and reduces pollution. And an complete dry fertilizer granulation production line includes mixers, roller extruders, screens, and packers.

Dry Granulation Process

What is the dry granulation method? How does it work?

Dry granulation is a method that makes fertilizer granules without any liquid binder like melaza. It uses no water, no steam, and no solution. Instead, it relies on strong mechanical force. Primero, the machine feeds powder in a stable flow. Then high-pressure rollers or an extruder compact the material. So the powder turns into dense flakes, strips, or blocks.

Dry Granulation Solution
SX bio fertilizer manufacturing line products

Próximo, a crusher breaks the compacted cake. Then a shaping unit smooths the edges. Después, a screen separates qualified granules. So you get a consistent size range. And you send oversize and fines back to the line. This loop improves fertilizer yield and reduces waste. Dry granulation method fits many NPK blends and compound fertilizer formulas. It also helps when heat and moisture cause problems. So you can cut drying cost and simplify the process.

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When is the dry granulation method suitable for your fertilizer production?

Do you want to know when the dry granulation method works best? We will give you the answer.

The powder should have less than 20% water content. High moisture causes sticking, and then the rollers cannot press properly.

Wet granulation needs a dryer and a cooler, so your electricity and fuel bills go up. Dry granulation skips these steps, and then you cut your running costs by 30% or more.

Wet lines produce waste gas and dust, so you need expensive treatment systems. Dry granulation runs in a closed system, so it creates less pollution.

benefit of dry project
benefit of dry method
benefit of dry granulation
advantage of dry granulation

Some fertilizers lose nutrients under high heat. The dry method never heats the material, so your product keeps its full value.

A dry line needs fewer machines and less floor area, so it fits into smaller workshops.

What equipment do you need for a dry granulation production line?

A dry granulation fertilizer line uses clear steps and matched machines. Primero, you feed materials. Then you crush and screen them. Próximo, you batch and mix them. Después, you press granules. Finalmente, you screen again and pack.

For an organic fertilizer dry granulation line, the equipment list is: Loader feeding system → Vertical crusher → Rotary screening machine → Dynamic automatic batching system → Horizontal mixer → Double roller extrusion granulator →Rotary screening machine → Packing machine. This line keeps stable dosing, and it improves mixing.

Organic fertilizer dry granulation process
dry granulation with compound fertilizer production

For a compound fertilizer dry granulation line, the equipment list is: Dynamic automatic batching machine → Double shafts horizontal mixer → Double roller extrusion granulator → Rotary screening machine → Packing machine. This line runs fast, and it suits formula changes.

If you need granulator such disc granulator or drum granulator or other fertilizer production machine, please feel free to contact us, YUSHUNXIN.